Device Terminating Read Dma; Table 31. Ultra Dma Cycle Timing Chart (Device Terminating Read); Table 32. Ultra Dma Cycle Timings (Device Terminating Read) - Hitachi HDS725050KLA360 Specifications

6.8.4 Device Terminating Read DMA

Table 31: Ultra DMA cycle timing chart (Device terminating Read)
DMARQ
DMACK-
STOP
HDMARDY-
DSTROBE
DD(15:0)
Device drives DD
Table 32: Ultra DMA cycle timings (Device Terminating Read)
PARAMETER DESCRIPTION
(all values in ns)
tSS Time from DSTROBE edge to nega-
tion of DMARQ
tLI Limited interlock time
tAZ Maximum time allowed for output driv-
ers to release
tZAH Maximum delay time required for out-
put
tMLI Interlock time with minimum
tCS CRC word setup time at device
tCH CRC word hold time at device
tACK Hold time for DMACK-
tIORDYZ Maximum time before releasing
IORDY
tSS
tLI
tLI
tAZ
xxxxxx
tZAH
MODE 0 MODE 1
MIN MAX MIN
50 – 50
0 150 0
– 10 –
20 – 20
20 – 20
15 – 10
5 – 5
20 – 20
– 20 –
Deskstar 7K500 and Deskstar E7K500 Hard Disk Drive Specification
tMLI
tIORDYZ
tLI
xxxxxxxxxxxxxxxxxx
Host drives DD
MODE 2 MODE 3
MAX MIN MAX MIN MAX
– 50 – 50 –
150 0 150 0 100
10 – 10 – 10
– 20 – 20 –
– 20 – 20 –
– 7 – 7 –
– 5 – 5 –
– 20 – 20 –
20 – 20 – 20
38
tACK
tACK
tCH
tCS
xxxxxxxxxx
CRC
MODE 4 MODE 5
MIN MAX MIN MAX
50 – 50 –
0 75 0 60
– 10 – 10
20 – 20 –
20 – 20 –
5 – 5 –
5 – 5 –
20 – 20 –
– 20 – 20
MODE 6
MIN MAX
50 --
0 60
-- 10
20 --
20 --
5 --
5 --
20 --
-- 20